Carriage roll release for hectograph machines



Aug. 25, 1931. J. P. PEDE RSON 1,320,244

CARRIAGE ROLL RELEASE FOR HECTOGRAPH MACHINESw Filed March 10, 1930 .f 2 Sheets-Sheet. 2

Petented A 25, 1931 The iiiireiitionj Ii lites te -duiflieeting n aehi'nes andIhasreference rjnore p' artiei larly to a novel formiof carriage. constructionfor the type ofduplicators kn w es -hectog iaphman ChiIlSQ-ixgjzf; W x5; L I In the opefation of thistypeof dupileetor, the, carriagewhich constitutes the aCtlYQ 111 '-v pressionimember is adaptedYfOii forward and plateniend, is. ialso constructedw sq as -,t have a hin ingiactlionw whieh a11ows .the c rr egei o:

. beaswungiiinto inoperativefpo sitign F Operativelygvassbeiatedn yvith? the carriag is press'iori roller epilqited;to haYQ engagement with theas irface of theplziten, which seryes t0 impress=the blanki sheets of p pe upon the gelatin cmatrixi 1 15 It :;is;,.often "fgund hecee ai y-tb. li t their-i1: pxfessibnirller .wfroin impressiongeye after part. of the blai k ':sheet has ;;been impressed,

' since-the sheetwmay be. iri'egllla-lfly-i pl dv 1 the platenor mayfeve iteagduringthe opera,-

v tion', :in which I case, gOIE, eo irseg it must here;

moved. .FOB ii'emoval it is .-necessaryftp free the rollers-from Contact! with; theigelatin sur-- face: and to this end ofie {of-the, fobj ects ofthej I present invention is, toi providei anovel form bf'carriage construction, "haying-means for l locking the impression i roller; .ii the pressed position: fand lothel' mechanism for eonve i-v v iently releasing-thelock-wheridesiredelle ,7 Another object is tolproyideafjcarriage conin struction. which" will embody-{a pivetally mounted impression roller adapted tobeconveniently; locked in o'p'ei ative position and which will also be capable .of automatic re- 1 leflse-whe the I sitiongmm;

carriage reaches its end .130-

' A'js'till iurthefist --a can riage 'e911striietien "embodying a-"piv0t'a11y V Iii ()finteci im'pfesion roller adapted t6 beaue tomatieally locked in positiqiiiwheildepressed endwvmQe iu;bespmvided with iheian s for i he'filiellly ij lea sin g the floek when" desiredil iie i idx tre 11 0 br l si ie i i w th type .e im e e ine e d s ibed p ed t be ou t d y pemte yimea l' fvnd "which: we ilkli ielssz egnb dy; ilel ei oce ed l ani g Pu po es convenient position for releasirig ieii'terhetie I lac ng afi i A yet in her object is.wiiprp ga e,

i ge: l Qns iqn which w em ody a P V otally mounted impression trolley a id-ipne wh h w beipr vi with me fo a lo ingz qnve i t t c men o S id: rOlle jfqr i-A furth obieet sitfi of arriage; ons r eti n ad p ed t m t the eq ir me ts 9 ectog eph chine W rks I hic w b posi aand;.;1 e i ble n 'LQP a:

tion. ea y' otm ufectll re. i a? p v I a a With t ese; an Wu' QHS;z o h r; bi iii iew, ithei ntent on {may QQIis St o f-le it j n n ve eat e Qt en' tru i n; endlnpe ati n,

ar yi-pbint de ut n the speqifi in s an cla m ppe ded there hon-,idxe I zth draw ngs, wh c iuuseat diment f the d vic iand' wher in like ef e sew l be m e-fully describ d an ipart u-i q j ne lch mcte sa e u ed-t es g a ike partsj meq in' h w ng hezc nst i t oi fera .e 7,

m her i ge.f9ri1t ay r fl e p aten; e

surface,

Figure. 2 v

el t g p car ge? h w g featu es the v pm ent ny n iqn I I re 3 see se t bi lfl ew e a e i rens? s ly: ffih ii e i ge, e hQW i g th /l cki g 1 f I mebhanism o pr ng he ,P -QS t inven:

' @Fig ei s l l ew ,si i ntq Figure 3 but hQ ionof t et pfl k Wit the d s bp mberw @51 s w g; the k g me ha sm in lea .sll fewe klli Whic vfram m pace {from eaeh other jar id-heldgin set relation by i i ab ie b Mi1Q 1 QWm-A sl g bar 1 u edt end m mbe s 3"' 2 te ng t d fnq ly' 9f t e m hin %Q ide h re f and is adapted to support, so as to allow sliding movement in relation to the machine, a

l for the rubber impression roller 37, .P IOr with the wheels 28.

hinging member 14. A flat platen 15 is supported from the upper portion of the frames and has the usual gelatin matrix or band 16 supported thereon. The band is wound upon spindles 17 and 18, journaled in the side frames at each end thereof, the spindles being adapted to be rotated in the direction desired for securing'a clean portion oftheband upon the flat platen whenever necessary.

The hinging member 14 which is adapted to have reciprocating movement upon the bar 12 comprises a U-shaped member, Figure 2, having legs 19 and a connecting portion 20. The connecting portion is adapted to have sliding engagementon the bar 12, while the legs have suitably'secu'red to them by pins 21 the carriage frameto presently de- The carriage frame comprises twoside members 22 and 2-3 respectively joined at their ends by end frame members 24.. One of the side members, viz, the member 22-, is prefer'abiy provided with threaded portions 25 for'securing in position in the desired locati'onto the carriage frame a copy holder designated in its'entiretyby 26. Also'secured to the carriage frame'by means of a threadedmembex-Q? is a wheel 28'wh'ich is adapted tohave bearing upon the tracks 11. his therefore seenthat the entire'carriage construetion comprises the hingihg member 14 and the carriage frame as described together haver'eciprocating movements over thesurface of the platen. As a means for decreasing the frictional resistance of'this movement, the carriage frame is provided on either side thereto, the arm being pivotally mounted the carriage frame by means of 7 pivot "rod 32. Aspriiig 33 is providedfor maintaming the handle arm in raised position. Thespring has one end secure'dto the pivot rod32as at 34 and its other endfirmly secured to ftheside frame 23 of the carriage frame. The handle arm is provided at each e'n'd'witih side extensions 35 of theshape as shown, said extensions being provided at their depending end with a fork portion 36. The extensions provide the journaling means vided'with a central shaft 38, which impresto engage the shaft andhold the same within the forked portion 36. WVhen it becomes necessary toclean the impression member 37, the same can be easily removed by actuation of the plunger 42-which allows the plate member to rotate in relation to the extensions and thus frees the shaft 38 therefrom.

Operatively associated with the impression roller37 is a pressure roller 45 adapted to bejournaled at each end by means of a hanger 46, which hanger is pivotally supported from the end frames 24'by means of a pin 47 and threaded securing means 48. The hanger is spring pressed in a direction so that the pressureroller 45 will be forced into engagement with the impression roller 37 by means of a spiral spring 50,located within the frame 22 of the carriage. A pin 51 serves to prevent the han'ger4'6 from being'pressed in an outward direction beyond the required limit.

' The locking mechanism comprisesa looking lever 52 pivoted to one of the end frames 24 by means of a pin 53 secured in place by threaded means. The pressure means for keeping-the locking lever pressed in its desired direction comprises a spring 54 located on the shaft 47, which spring is provided with an arm 55 having engagement against the locking lever 52. The other arm of the spring is secured to the hanger 46 as shown. Referring particularly to Figure 3 it is seen that the locking lever is provided Witha-n outstanding portion '56, which portion is adapted to have engagement upon'a ledge 57 provided in'one of the extensions 35' for the purpose. It is there'- fore seen that upon actuation of the handle *31 in a direction to depress the impression roller 37. the locking lever 52 wiil be allowed to "swing in a direction toward the left as viewed in Figure 3, so that th'e portion 5'6 is positioned over the ledge 57. This interen'gagement of thesepart's provides a lock for the handle arm '30 and thus for the impression roller 37, maintaining the latter in impression upon the gelatin surface. For tripping the locking lever, a trip lever 60 is provided, being secured to a shaft 61, which shaft is ournaled in bearings 62 upon the-handle arm 30. To the outer end of the shaft-is fixedly secured a pawl 63. Apin 64 is provided for limiting the upward movement'of the pawl. By

ac'tuationof the lever60 the pawl '63 will engagethe locking lever. 52," forcing the same towards the right as viewed in Figure 3, thus freeing the portion 56 from engagement'wi'th the ledge Wand-allowing the handle arm to assume its released position by reason of the spring 33.

. It is. desirable when thejcarriage is. located in its forward position, that is, in a position at the extreme left hand end of the frame as viewed in Figure l to have the impression.

' roller automaticallyassume its released pr sition. This is accomplished by means of a stationary stop 65 secured 'to the side frame 10 by means of a screw56. For this'purpose the locking leveris-Lprovided with a bent end 67. Upon reciprocation of the carriage ina direction to locate the carriage" in a forward position as described, the bentportion 67 of "the locking lever will engage the stationarystop, thus throwing the lever in the direction towards the right andreleasing'its engagement with the extensions of the handle arm in. much the same manner as accomplished by actuation of the lever 60. Itis therefore seen j that the locking mechanism may be released R by manually operated means whenever de- 12 and at its other end to the-corresponding rearward part. of theside frames. Thus in I operation of the. carriage the handle is Q position.

siredand also released byautomatic means when the carr age 1s located 1n lts. forward of a cord 70. The cord is secured at one end to the forward part of. the-side framesgrasped by the operator and after insertion of. a blank or master copy between theimsion roller and thepaper in impressed position. The carriage is then reciprocated by the operator over :the surface of-the platen to duplicate the matter thereon tothe blanksheet or matrix. As the carriage is moved towards the left, as viewedin Figure 1, and as it approaches its extreme left handposi tion, the locking lever 52will be thrown into trip position by reason of its bentportion 57 striking the stationary stop 65; V This will automatically free the impression roller from its locked position, thus allowing removal' of the duplicated sheet and insertion of another blank sheet, whereupon the operation can be repeated. T I e It is to be understood that I do not wish to be limited by the exact embodiment of the de-- vice shown, which is merely by way, of illustration and not limitation, as var ous and other forms ofthe' device will of course: be

releasing. saidiarm upon engagement of the lower depending end "of said a apparent to those skilled inthe art without departing from the? spirit of the invention or the scope ofthe claims. Iclaim: v

' 1. In a carriage construction for duplicat ing machines comprising a'pivotallymounted' locking lever.

handle} arm -51a 1 extensions; integral with said arm? an impression roller :journaled in V s'aid fextensio'ns, a {ledge provided in one: of said: extensions, a pivotally mountedflocking .lexner adapted to engage'said l ledge to hold. 'the a'rini in depressed position, and 'a trlp lev'er mounted onsaidarrnfer manually releasing 3 d lockin "lever;

ing mounted handle arm, side extensions lntegral with'said arm, animpress' onroller ournaled 2. Ina carr1agejconstruction for' duplicat machines comprising 5' a pivotally *hold' the; farm" 1 in depressed position, :a trip lever for 1 manually yreleasing said locking lever means comprising a stationary stop for automatically releasingsaidlocking lever uponengagement therewith. q 3311i; a dupllcating-machine, 'a carriage comprising end fra-me members, ahandle arm pivotally mounted: within said" end-frames, 1

an v impression member; journailedi to vsaid' 1 handle" arm, a locking lever pivoted toone end frameand adapted'to engage with said arm, and means mounted'onfsaid arm for f tr pplng said lockm'glever; Y

A; In, a duplicating machine, a carriage comprisingend frame members, a handle arm= pivotally mounted within said end frames,

an impression; member journaled to said" handle arm, and a trip lever mounted on handle arm, a locking, lever pivoted tojone end-frameand adapted to engage With'saidf said arm and having means engaging said locking lever-for tripping the same. .pression roller 37 and the pressure roller 415, the same is depressed to look the impres} 5. Ina duplicating machine, "a carriage vided in one of said extensions, a lo'ckin lever pivoted to one end frame and adapte toengage said ledge to hold the arm in depressed position, and a trip lever mounted on said arm for manually releasing said locking lever.

1 6. In a comprising end framem'embers, ahandle arm pivotally mounted within said -.end frames, extensions on said arm, an mpresduplicating machine, a carriage sion' roller ,journaled in said e-xtensions, a]

ledge provided in one of said extensions, a

I looking. lever pivoted tothe upper portion of one vend frame and terminating atthelower end thereof, said lever adaptedto engage said ledge to hold thefarm in depressed position, 7 and means comprising. a stationary stop for K stop with the 7. In a duplicating machine, acarriage comprising end frame members, a handle arm pivotally mounted within said-end frames, extensions on said arm, an impression roller, a forked end on said extensions for accommodating said roller, a plate pivotally secured to extensions for holding said roller journaled in said extensions, and a locking lever adapted to engage said plate 01 holding the roller in depressed position, said plate being provided with means for allowing rotation thereof with respect to said extensions whereby the roller may be removed. ,8. Ina duplicating machine, in combination with a printing surface, a carriage, means mounting the carriage for reciprocas tion over theprinting surface, an impression member journaled in said carriage, means locking the member in depressed position, atrip lever adapted to be manually actuated for releasing said locking means when desired, and other means automaticallyreleas: ing said locking means when the carriage is located in its forward position. a

.Signedat Chicago, Illinois, this 3 day of March, 1930., r

- JOHNRPEDERSON.

DISOLAI MER 1,820,244.J0hn P. Pederson, Chicago, Ill. CARRIAGE ROLL RELEASE FOR HECTO- GRAPH MACHINE. Patent dated August 25, 1931. Disclaimer filed November 3, 1932, by the assignee, Ditto Incorporated.

Therefore, enters this disclaimer to claim 8 in said patent, which is in the following words, to-wit:

8. In a duplicating machine, in combination with a printing surface, a carriage, means mounting the carriage for reciprocation over the printing surface, an impression member journaled in said carriage, means locking the member in depressed position, a trip lever adapted to be manually actuated for releasing said locking means when desired, and other means automatically releasing said locking means when the carriage is located in its forward position.

[Ofiicial Gazette November 22, 1932.] 

